/*anti spam*/

function valida() {
	if(trim(document.commento.nome.value)=="") {
		alert('Inserisci il nome!');
		document.commento.nome.focus();
		return false;
	}
	if(trim(document.commento.email.value)=="") {
		alert('Inserisci l\indirizzo e-mail!');
		document.commento.email.focus();
		return false;
	}
	if(trim(document.commento.text.value)=="") {
		alert('Inserisci almeno un commento!');
		document.commento.text.focus();
		return false;
	}
	return true;
}
function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_validateForm() { //v4.0
  var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
  for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
    if (val) { nm=val.name; if ((val=val.value)!="") {
      if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
        if (p<1 || p==(val.length-1)) errors+='L\'e-mail deve essere valida.\n';
      } else if (test!='R') { num = parseFloat(val);
        if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
        if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
          min=test.substring(8,p); max=test.substring(p+1);
          if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.\n';
    } } } else if (test.charAt(0) == 'R') errors += '- '+nm+' necessaria.\n'; }
  } if (errors) alert(errors);
  document.MM_returnValue = (errors == '');
}

		function scriviTesto() {
		testo=document.commento.text.value;
		prev1=document.getElementById("preview1");
		prev2=document.getElementById("preview2");
		prev3=document.getElementById("preview3");
		if (testo=="") {
		prev1.style.display="none";
		prev2.style.display="none";
		prev3.style.display="none";
		} else {
		prev1.style.display="block";
		prev2.style.display="block";
		prev3.style.display="block";
		}
		testo=testo.replace(/</g, "&lt;");
		testo=testo.replace(/>/g, "&gt;");
		testo=testo.replace(/(\r\n|\r|\n|\n\r)/g, "<br />");
		testo=testo.replace(/http/g, "non consentito<br />");
		testo=testo.replace(/(h( {1,})t( {1,})t( {1,})p)/g, "non consentito<br />");
		testo=testo.replace(/(w{2,})/g, "non consentito<br />");
		testo=testo.replace(/(w( {1,})w( {1,})[a-zA-Z0-9])/g, "non consentito<br />");
		testo=testo.replace(/(w( {1,})w( {1,})w)/g, "non consentito<br />");
		//andrebbe studiato il modo di riconoscere h   t    t    p   : // ecc ecc.
		var controllo = /non consentito<br \/>/;
		if (controllo.test(testo)) {
			document.commento.submit.disabled=true;
			document.getElementById("textpreview").innerHTML = "non consentito";
		} else {
			document.commento.submit.disabled=false;
			document.getElementById("textpreview").innerHTML = testo;
		}
		
		}
/* /anti spam*/